Alright, so I finally figured out the problem and was able to fix it. It seems that there is a separate firmware built into the nic itself, with it's own setup options. However, the window that tells you how to enter that setup screen was only coming up sporatically at best, and only stayed on screen for a few moments, so it was only after sheer dumb luck that i was able to get into that setup screen and change the options from an RPL boot back to a PXE boot.
-Kevin